l I2C-bus to 16-bit GPIO expander l Operating power supply voltage range of 2.3-V to 5.5-V l Low standby current consumption l 5 V tolerant I/O ports l 400 kHz fast-mode I2C-bus clock frequency l Noise filter on SCL/SDA inputs l Internal power-on reset l No glitch on power-up l Polarity Inversion r.